Sales tax I generally defend because it's not going to the business, it goes straight to the government. Removing it leads to cases where Europeans complain that the price of x is higher for them, forgetting their price includes a 20% VAT from their government. I think it's good to keep every citizen (obviously a large number do understand VAT, but it's not all) be reminded of what they're paying their government for.

But I recently was buying a vehicle and the otd price was 20% more than the price on their site, before sales tax/license fees. That practice is obviously anti-consumer.